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Method for starting gas-conducting lamp and lamp for carrying out the method

  • US 5,459,377 A
  • Filed: 12/28/1993
  • Issued: 10/17/1995
  • Est. Priority Date: 12/28/1993
  • Status: Expired due to Fees
First Claim
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1. A starting circuit for a gas-conducting lamp comprising a lamp tube without a filament;

  • first and second contacts for connecting the circuit to a source of power at a predetermined power frequency;

    a single inductor series connected with said contacts and with said lamp tube;

    a single capacitor; and

    switching means for switching said capacitor between a first condition in which said capacitor is connected in LC resonance with said inductor for producing a large instantaneous resonant current at said power frequency and a second condition in which said capacitor ceases to be in LC resonance with said inductor to produce a high inductive voltage accross said lamp tube to start said lamp tube and to increase the power factor and/or series impedance of the circuit by said capacitor during the operation of said lamp tube.

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